Enable security removal in FPDF_Doc_Save

core/src/fpdfapi/fpdf_edit/fpdf_edit_create.cpp

Index: core/src/fpdfapi/fpdf_edit/fpdf_edit_create.cpp
diff --git a/core/src/fpdfapi/fpdf_edit/fpdf_edit_create.cpp b/core/src/fpdfapi/fpdf_edit/fpdf_edit_create.cpp
index e5bb1cf98505d86a290275360ab8572696b36979..bdbcccdf06dc5d47cc9832e2648e85a6524743db 100644
--- a/core/src/fpdfapi/fpdf_edit/fpdf_edit_create.cpp
+++ b/core/src/fpdfapi/fpdf_edit/fpdf_edit_create.cpp
@@ -1,7 +1,7 @@
 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
- 
+
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #include "../../../include/fpdfapi/fpdf_serial.h"
@@ -2113,6 +2113,13 @@ FX_BOOL CPDF_Creator::SetFileVersion(FX_INT32 fileVersion )
     m_FileVersion = fileVersion;
     return TRUE;
 }
+void CPDF_Creator::RemoveSecurity()
+{
+    ResetStandardSecurity();
+    m_bSecurityChanged = TRUE;
+    m_pEncryptDict = NULL;
+    m_pCryptoHandler = NULL;
+}
 void CPDF_Creator::ResetStandardSecurity()
 {
     if ((m_bStandardSecurity || m_bNewCrypto) && m_pCryptoHandler) {